RARE EARTH METAL COMPLEX, POLYMERIZATION CATALYST, AND METHOD FOR PRODUCING POLYMER

摘要

PROBLEM TO BE SOLVED: To provide a rare earth metal complex useful as a catalyst for the polymerization of an olefin or a polar monomer such as lactone, and to provide a polymerization catalyst containing the complex, and a polymer production method using the catalyst.

SOLUTION: The rare earth metal complex is represented by formula (1) (wherein A is a group 14 element in the periodic table; Cp is a group having a cyclopentadienyl type anion skeleton; Ln is a group 3 metal atom or a lanthanoid metal atom; R1to R6each represents H, a halogen group, an alkyl group, an aryl group or the like; R7is alkyl, an aryl group or aralkyl group; X is a monoanionic ligand; Y is a neutral ligand; and m and n are each an integer of 1 to 3).

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